SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                    FORM 6-K


                        Report of Foreign Private Issuer


                       Pursuant to Rule 13a-16 or 15d-16
                     of the Securities Exchange Act of 1934


                           For the month of May, 2006

                              RYANAIR HOLDINGS PLC
                (Translation of registrant's name into English)

                     c/o Ryanair Ltd Corporate Head Office
                                 Dublin Airport
                             County Dublin Ireland
                    (Address of principal executive offices)


Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.

                         Form 20-F..X.. Form 40-F.....


Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange
Act of 1934.

                               Yes ..... No ..X..


If "Yes" is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b): 82- ________


Ryanair Holdings Plc


23rd May 2006


Re: Holding in Company



A Letter from The Capital Group Companies, Inc dated 22 May 2006 to Ryanair
Holdings Plc, received by Ryanair Holdings Plc on the 22 May 2006.



Re: Section 67 Notification


            Enclosed is a Section 67 Notification date 19 May 2006.


Please note that one or more of the affiliates of The Capital Group Companies,
Inc. have made notifications to your company pursuant to Section 67 in the past.
  For a description of our organization, please visit our Web site at
www.capgroup.com.

For the purposes of this Notification an outstanding share balance of
770,844,836 shares was used to calculate the percentages of holdings of the
relevant share capital which determine the notifiable interest.  We believe this
outstanding share balance is current; however, if this number is not accurate,
please contact us as soon as possible so we may make the necessary revisions to
this Notification.

Should you have questions or require additional information, please contact Gina
Martinez or Viven Tan at (213) 615-0469, or send a fax message to (213)
486-9698.  Alternatively, you may contact us via E-mail at GRGroup@capgroup.com.


Gina Martinez
Compliance Consultant
The Capital Group Companies, Inc.



                           Notification of Interests

                        (Section 67 Companies Act 1990)


This Notice is given by The Capital Group Companies, Inc. on behalf of its
affiliates, including Capital Research and Management Company, Capital
International,Inc., Capital International S.A., Capital Guardian Trust Company,
and Capital International Limited, pursuant to Section 67 of the Companies Act,
1990.

The interest in the relevant share capital indicated below arises by virtue of
holdings attributed to the Companies (see Schedule A).  These holdings form part
of funds managed on behalf of investment clients by the Companies.

Share capital to which this relates:

Ordinary Shares (including ADRs)


Number of shares in which the Companies have a notifiable interest:

54,040,463 Ordinary Shares (including ADRs)


Name(s) of registered holder(s):

See Schedule B


As of 19 May 2006


Ryanair Holdings Plc


Schedule B



                 Schedule of holdings in Ryanair Holdings, Plc

                               As of 22 May 2006



    Schedule B


                         CAPITAL INTERNATIONAL LIMITED



Registered Name                                         Local Shares
                                                     
Bank of New York Nominees                               761,795
Bank of New York
3 Birchin Lane
London EC3V 9BY

Northern Trust                                          425,933
C/O NorTrust Nominees Limited
155 Bishopsgate
London EC2M 3XS
UK.

Cede & Co.                                              195,990
55 Water Street
New York, NY 10006

Citibank London                                         69,530
11 Old Jewry
London EC2R 8D8
UK

Nortrust Nominees                                       75,134
155 Bishopsgate
London EC2M 3XS
United Kingdom

Bank of Ireland                                         825,445
Intl Financial Services Centre
1 Harbourmaster Place
Dublin 1

Allied Irish Bank Plc                                   680,043
Stock Exchange and Trust Services
Bank Centre, P.O. Box 512
Ballsbridge, Dublin 4

MSS Nominees Limited                                    89,300
Midland Bank Plc
Mariner House, Pepys
London EC3N 4DA

State Street Bank & Trust Co                            270,486

Deutsche Bank AG                                        4,200
23 Great Winchester Street
London EC2P 2AX
United Kingdom

Mellon Bank N.A.                                        9,800
London Branch
London
United Kingdom

Alibank Nominees Limited                                630,143
Allied Irish Bank
Stock Exchange and Trust Services
Bank Centre
PO Box 512
Dublin
Ballsbridge

Citibank N.A. (Ireland)                                 93,500
IFSC House
Custom House Quay
Dublin 1

Bank of Ireland Nominees Limited                        533,000
Bank of Ireland
International Financial Services Center
1 Harbourmaster Place

AIB Custodial Nominees Limited                          97,100

JP Morgan Chase Bank                                    194,160

          Total                                         4,935,559





                           Capital International S.A




Registered Name                                         Local Shares
                                                     
Cede & Co                                               555,935
55 Water Street
New York NY 10006

Bank of Ireland                                         11,400
Intl Financial Services Centre
1 Harbourmaster Place
Dublin 1

Bank of Ireland Nominees Limited                        127,000
Bank of Ireland
Intl Financial Services Centre
1 Harbourmaster Place

Total                                                   694,335






                                   Schedule B


                           Capital International, Inc




Registered Name                                         Local Shares
                                                     
Cede & Co                                               186,500
55 Water Street
New York, NY 10006

Alibank Nominees Limited                                114,788
Allied Irish Bank
Stock Exchange and Trust Services
Bank Centre P.O. Box 512
Dublin
Ballsbridge

Total                                                   301,288




                                   Schedule B


                    Capital Research and Management Company



Registered Name                                         Local Shares
                                                     
Cede & Co                                               41,536,200
55 Water Street
New York, NY 10006

Total                                                   41,536,200





                                   Schedule A

                The Capital Group Companies, Inc ("CG") holdings




Registered Name                                   Number of Shares                    Percent of Outstanding
                                                                                
The Capital Group Companies, Inc. ("CG") holdings 54,040,463                          7.011%
Capital Guardian Trust Company                    6,573,081                           0.853%
Capital International Limited                     4,935,559                           0.640%

Capital International S.A                         694,335                             0.090%
Capital International Inc.                        301,288                             0.039%
Capital Research & Management Company             41,536,200                          5.388%









                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned, hereunto duly authorized.

                                    RYANAIR HOLDINGS PLC


Date:  24 May 2006

                                    By:___/s/ James Callaghan____

                                    James Callaghan
                                    Company Secretary & Finance Director